Package whatmask

Convert between different netmask types and show information

http://www.laffeycomputer.com/whatmask.html

Whatmask is a small program that can analyze CIDR, netmask, netmask (hex),
and wildcard bit notations to give useful information about a given network
block in question. It is similar to ipcalc, but provides an easier-to-use
interface.

General Commands
Command Description
whatmask Subnet mask notation conversion tool.